<template>
  <div style="position: relative">
    <div
      v-if="type === '2'"
      class="verify-img-out"
      :style="{ height: parseInt(setSize.imgHeight) + vSpace + 'px' }"
    >
      <div class="verify-img-panel" :style="{ width: setSize.imgWidth, height: setSize.imgHeight }">
        <img
          :src="'data:image/png;base64,' + backImgBase"
          alt=""
          style="width: 100%; height: 100%; display: block"
        />
        <div class="verify-refresh" @click="refresh" v-show="showRefresh"
          ><i class="iconfont icon-refresh"></i>
        </div>
        <transition name="tips">
          <span class="verify-tips" v-if="tipWords" :class="passFlag ? 'suc-bg' : 'err-bg'">{{
            tipWords
          }}</span>
        </transition>
      </div>
    </div>
    <!-- 公共部分 -->
    <div
      class="verify-bar-area"
      :style="{ width: setSize.imgWidth, height: barSize.height, 'line-height': barSize.height }"
    >
      <span class="verify-msg" v-text="text"></span>
      <div
        class="verify-left-bar"
        :style="{
          width: leftBarWidth !== undefined ? leftBarWidth : barSize.height,
          height: barSize.height,
          'border-color': leftBarBorderColor,
          transaction: transitionWidth,
        }"
      >
        <span class="verify-msg" v-text="finishText"></span>
        <div
          class="verify-move-block"
          @touchstart="start"
          @mousedown="start"
          :style="{
            width: barSize.height,
            height: barSize.height,
            'background-color': moveBlockBackgroundColor,
            left: moveBlockLeft,
            transition: transitionLeft,
          }"
        >
          <i :class="['verify-icon iconfont', iconClass]" :style="{ color: iconColor }"></i>
          <div
            v-if="type === '2'"
            class="verify-sub-block"
            :style="{
              width: Math.floor((parseInt(setSize.imgWidth) * 47) / 310) + 'px',
              height: setSize.imgHeight,
              top: '-' + (parseInt(setSize.imgHeight) + vSpace) + 'px',
              'background-size': setSize.imgWidth + ' ' + setSize.imgHeight,
            }"
          >
            <img
              :src="'data:image/png;base64,' + blockBackImgBase"
              alt=""
              style="width: 100%; height: 100%; display: block; -webkit-user-drag: none"
            />
          </div>
        </div>
      </div>
    </div>
  </div>
</template>
<script type="text/babel">
  /**
   * VerifySlide
   * @description 滑块
   * */
  import { aesEncrypt } from './../utils/ase';
  import { resetSize } from './../utils/util';
  import { reqGet, reqCheck } from './../api/index';
  import {
    computed,
    onMounted,
    reactive,
    ref,
    watch,
    nextTick,
    toRefs,
    watchEffect,
    getCurrentInstance,
  } from 'vue';
  //  "captchaType":"blockPuzzle",
  export default {
    name: 'VerifySlide',
    props: {
      captchaType: {
        type: String,
      },
      type: {
        type: String,
        default: '1',
      },
      //弹出式pop，固定fixed
      mode: {
        type: String,
        default: 'fixed',
      },
      vSpace: {
        type: Number,
        default: 5,
      },
      explain: {
        type: String,
        default: '向右滑动完成验证',
      },
      imgSize: {
        type: Object,
        default() {
          return {
            width: '310px',
            height: '155px',
          };
        },
      },
      blockSize: {
        type: Object,
        default() {
          return {
            width: '50px',
            height: '50px',
          };
        },
      },
      barSize: {
        type: Object,
        default() {
          return {
            width: '310px',
            height: '40px',
          };
        },
      },
    },
    setup(props, context) {
      const { mode, captchaType, vSpace, imgSize, barSize, type, blockSize, explain } =
        toRefs(props);
      const { proxy } = getCurrentInstance();
      let secretKey = ref(''), //后端返回的ase加密秘钥
        passFlag = ref(''), //是否通过的标识
        backImgBase = ref(''), //验证码背景图片
        blockBackImgBase = ref(''), //验证滑块的背景图片
        backToken = ref(''), //后端返回的唯一token值
        startMoveTime = ref(''), //移动开始的时间
        endMovetime = ref(''), //移动结束的时间
        tipsBackColor = ref(''), //提示词的背景颜色
        tipWords = ref(''),
        text = ref(''),
        finishText = ref(''),
        setSize = reactive({
          imgHeight: 0,
          imgWidth: 0,
          barHeight: 0,
          barWidth: 0,
        }),
        top = ref(0),
        left = ref(0),
        moveBlockLeft = ref(undefined),
        leftBarWidth = ref(undefined),
        // 移动中样式
        moveBlockBackgroundColor = ref(undefined),
        leftBarBorderColor = ref('#ddd'),
        iconColor = ref(undefined),
        iconClass = ref('icon-right'),
        status = ref(false), //鼠标状态
        isEnd = ref(false), //是够验证完成
        showRefresh = ref(true),
        transitionLeft = ref(''),
        transitionWidth = ref(''),
        startLeft = ref(0);

      const barArea = computed(() => {
        return proxy.$el.querySelector('.verify-bar-area');
      });
      function init() {
        text.value = explain.value;
        getPictrue();
        nextTick(() => {
          let { imgHeight, imgWidth, barHeight, barWidth } = resetSize(proxy);
          setSize.imgHeight = imgHeight;
          setSize.imgWidth = imgWidth;
          setSize.barHeight = barHeight;
          setSize.barWidth = barWidth;
          proxy.$parent.$emit('ready', proxy);
        });

        window.removeEventListener('touchmove', function (e) {
          move(e);
        });
        window.removeEventListener('mousemove', function (e) {
          move(e);
        });

        //鼠标松开
        window.removeEventListener('touchend', function () {
          end();
        });
        window.removeEventListener('mouseup', function () {
          end();
        });

        window.addEventListener('touchmove', function (e) {
          move(e);
        });
        window.addEventListener('mousemove', function (e) {
          move(e);
        });

        //鼠标松开
        window.addEventListener('touchend', function () {
          end();
        });
        window.addEventListener('mouseup', function () {
          end();
        });
      }
      watch(type, () => {
        init();
      });
      onMounted(() => {
        // 禁止拖拽
        init();
        proxy.$el.onselectstart = function () {
          return false;
        };
      });
      //鼠标按下
      function start(e) {
        e = e || window.event;
        if (!e.touches) {
          //兼容PC端
          var x = e.clientX;
        } else {
          //兼容移动端
          var x = e.touches[0].pageX;
        }
        console.log(barArea);
        startLeft.value = Math.floor(x - barArea.value.getBoundingClientRect().left);
        startMoveTime.value = +new Date(); //开始滑动的时间
        if (isEnd.value == false) {
          text.value = '';
          moveBlockBackgroundColor.value = '#337ab7';
          leftBarBorderColor.value = '#337AB7';
          iconColor.value = '#fff';
          e.stopPropagation();
          status.value = true;
        }
      }
      //鼠标移动
      function move(e) {
        e = e || window.event;
        if (status.value && isEnd.value == false) {
          if (!e.touches) {
            //兼容PC端
            var x = e.clientX;
          } else {
            //兼容移动端
            var x = e.touches[0].pageX;
          }
          var bar_area_left = barArea.value.getBoundingClientRect().left;
          var move_block_left = x - bar_area_left; //小方块相对于父元素的left值
          if (
            move_block_left >=
            barArea.value.offsetWidth - parseInt(parseInt(blockSize.value.width) / 2) - 2
          ) {
            move_block_left =
              barArea.value.offsetWidth - parseInt(parseInt(blockSize.value.width) / 2) - 2;
          }
          if (move_block_left <= 0) {
            move_block_left = parseInt(parseInt(blockSize.value.width) / 2);
          }
          //拖动后小方块的left值
          moveBlockLeft.value = move_block_left - startLeft.value + 'px';
          leftBarWidth.value = move_block_left - startLeft.value + 'px';
        }
      }

      //鼠标松开
      function end() {
        endMovetime.value = +new Date();
        //判断是否重合
        if (status.value && isEnd.value == false) {
          var moveLeftDistance = parseInt((moveBlockLeft.value || '').replace('px', ''));
          moveLeftDistance = (moveLeftDistance * 310) / parseInt(setSize.imgWidth);
          let data = {
            captchaType: captchaType.value,
            pointJson: secretKey.value
              ? aesEncrypt(JSON.stringify({ x: moveLeftDistance, y: 5.0 }), secretKey.value)
              : JSON.stringify({ x: moveLeftDistance, y: 5.0 }),
            token: backToken.value,
          };
          reqCheck(data).then((res) => {
            if (res.repCode == '0000') {
              moveBlockBackgroundColor.value = '#5cb85c';
              leftBarBorderColor.value = '#5cb85c';
              iconColor.value = '#fff';
              iconClass.value = 'icon-check';
              showRefresh.value = false;
              isEnd.value = true;
              if (mode.value == 'pop') {
                setTimeout(() => {
                  proxy.$parent.clickShow = false;
                  refresh();
                }, 1500);
              }
              passFlag.value = true;
              tipWords.value = `${((endMovetime.value - startMoveTime.value) / 1000).toFixed(
                2,
              )}s验证成功`;
              var captchaVerification = secretKey.value
                ? aesEncrypt(
                    backToken.value + '---' + JSON.stringify({ x: moveLeftDistance, y: 5.0 }),
                    secretKey.value,
                  )
                : backToken.value + '---' + JSON.stringify({ x: moveLeftDistance, y: 5.0 });
              setTimeout(() => {
                tipWords.value = '';
                proxy.$parent.closeBox();
                proxy.$parent.$emit('success', { captchaVerification });
              }, 1000);
            } else {
              moveBlockBackgroundColor.value = '#d9534f';
              leftBarBorderColor.value = '#d9534f';
              iconColor.value = '#fff';
              iconClass.value = 'icon-close';
              passFlag.value = false;
              setTimeout(function () {
                refresh();
              }, 1000);
              proxy.$parent.$emit('error', proxy);
              tipWords.value = '验证失败';
              setTimeout(() => {
                tipWords.value = '';
              }, 1000);
            }
          });
          status.value = false;
        }
      }

      const refresh = () => {
        showRefresh.value = true;
        finishText.value = '';

        transitionLeft.value = 'left .3s';
        moveBlockLeft.value = 0;

        leftBarWidth.value = undefined;
        transitionWidth.value = 'width .3s';

        leftBarBorderColor.value = '#ddd';
        moveBlockBackgroundColor.value = '#fff';
        iconColor.value = '#000';
        iconClass.value = 'icon-right';
        isEnd.value = false;

        getPictrue();
        setTimeout(() => {
          transitionWidth.value = '';
          transitionLeft.value = '';
          text.value = explain.value;
        }, 300);
      };

      // 请求背景图片和验证图片
      function getPictrue() {
        let data = {
          captchaType: captchaType.value,
        };
        reqGet(data).then((res) => {
          if (res.repCode == '0000') {
            backImgBase.value = res.repData.originalImageBase64;
            blockBackImgBase.value = res.repData.jigsawImageBase64;
            backToken.value = res.repData.token;
            secretKey.value = res.repData.secretKey;
          } else {
            tipWords.value = res.repMsg;
          }
        });
      }
      return {
        secretKey, //后端返回的ase加密秘钥
        passFlag, //是否通过的标识
        backImgBase, //验证码背景图片
        blockBackImgBase, //验证滑块的背景图片
        backToken, //后端返回的唯一token值
        startMoveTime, //移动开始的时间
        endMovetime, //移动结束的时间
        tipsBackColor, //提示词的背景颜色
        tipWords,
        text,
        finishText,
        setSize,
        top,
        left,
        moveBlockLeft,
        leftBarWidth,
        // 移动中样式
        moveBlockBackgroundColor,
        leftBarBorderColor,
        iconColor,
        iconClass,
        status, //鼠标状态
        isEnd, //是够验证完成
        showRefresh,
        transitionLeft,
        transitionWidth,
        barArea,
        refresh,
        start,
      };
    },
  };
</script>
